Application porting method and apparatus, device, and medium

A method of porting a first application, corresponding to a third-party development tool, into a second application, corresponding to a sub-application that depends on a parent application to run, is performed by an electronic device. The device transforms the first application from a first project mechanism into a second project mechanism. The device converts a design resource in the transformed first application from a first resource format into a second resource format. The device exports the design resource to a development tool of the sub-application. The device converts a code resource in the transformed first application from a first programming language into a second programming language. The device exports the code resource to the development tool of the sub-application. The device also performs secondary development on the design resource and the code resource in the development tool of the sub-application.